Mason City, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° -34° (1899) 62° (2002) 0.82" NA
February 12° 29° -35° (1899) 67° (1981) 0.92" NA
March 23° 41° -32° (1962) 84° (1986) 2.01" NA
April 35° 57° 5° (1982) 95° (1980) 3.55" NA
May 46° 69° 23° (1967) 104° (1934) 4.96" NA
June 57° 79° 31° (1928) 104° (1934) 5.36" NA
July 61° 82° 38° (1899) 107° (1936) 4.68" NA
August 58° 80° 30° (1915) 103° (1930) 4.2" NA
September 49° 73° 15° (1899) 103° (1922) 3.18" NA
October 37° 60° -4° (1925) 94° (1963) 2.38" NA
November 25° 43° -14° (1897) 79° (2006) 1.99" NA
December 11° 28° -26° (1983) 65° (1998) 1.19" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 29° 50° 7° (1924) 79° (1986) 0.09" NA
Apr 2 29° 50° 11° (1899) 84° (2010) 0.09" NA
Apr 3 30° 51° 9° (1954) 80° (1981) 0.1" NA
Apr 4 30° 51° 9° (1995) 81° (1929) 0.09" NA
Apr 5 31° 52° 9° (1995) 79° (2005) 0.1" NA
Apr 6 31° 52° 5° (1982) 84° (1991) 0.1" NA
Apr 7 32° 53° 10° (1936) 88° (1991) 0.11" NA
Apr 8 32° 53° 15° (1928) 85° (1931) 0.1" NA
Apr 9 32° 54° 10° (1928) 85° (1977) 0.11" NA
Apr 10 33° 55° 15° (1997) 90° (1930) 0.11" NA
Apr 11 33° 55° 12° (1989) 85° (1977) 0.11" NA
Apr 12 34° 56° 16° (1939) 83° (1925) 0.11" NA
Apr 13 34° 56° 16° (1962) 83° (1931) 0.12" NA
Apr 14 34° 57° 17° (1928) 86° (2006) 0.13" NA
Apr 15 35° 57° 6° (1928) 87° (2003) 0.12" NA
Apr 16 35° 58° 18° (1928) 89° (2002) 0.12" NA
Apr 17 36° 58° 18° (1907) 87° (1985) 0.12" NA
Apr 18 36° 59° 17° (1983) 91° (1985) 0.12" NA
Apr 19 37° 59° 19° (1983) 89° (1994) 0.13" NA
Apr 20 37° 60° 21° (1928) 85° (1980) 0.12" NA
Apr 21 37° 60° 19° (1934) 93° (1980) 0.13" NA
Apr 22 38° 60° 19° (1986) 95° (1980) 0.13" NA
Apr 23 38° 61° 22° (1909) 90° (1924) 0.13" NA
Apr 24 39° 61° 19° (1956) 89° (1939) 0.13" NA
Apr 25 39° 62° 18° (1934) 89° (1949) 0.14" NA
Apr 26 39° 62° 24° (1926) 84° (1962) 0.14" NA
Apr 27 40° 63° 23° (1928) 87° (1977) 0.13" NA
Apr 28 40° 63° 25° (1928) 91° (1910) 0.14" NA
Apr 29 41° 63° 22° (1958) 90° (1910) 0.14" NA
Apr 30 41° 64° 24° (1908) 90° (2007) 0.14" NA
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